The point (1,3) is located in the first quadrant.
3
8
IV
Quadrant I : (+, +) Quadrant II : (-, +) Quadrant III : (-, -) Quadrant IV : (+, -)
9
quadrent IV(4)
If A is in quadrant IV, then A/2 is in quadrant II. Yes, the fact than cos(A) is 0.1 means that A is in quadrant I or IV, but it really is not required in order to answer the question. It is superfluous.
The point (2, 3) is located in the 1st quadrant
The point (1,3) is located in the first quadrant.
6
(3, -3)
3
The quadrant where a point has a negative x coordinate and a negative y coordinate is located in quadrant 3.
8
IV
The point (8,0) is on an axis (abscissa axis or x-axis) and is therefore not in a quadrant.